20147316879 has 16 divisors (see below), whose sum is σ = 29104745472. Its totient is φ = 12347465088.

The previous prime is 20147316841. The next prime is 20147316901. The reversal of 20147316879 is 97861374102.

It is a happy number.

It is not a de Polignac number, because 20147316879 - 2¹⁹ = 20146792591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20147316179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4591359 + ... + 4595744.

It is an arithmetic number, because the mean of its divisors is an integer number (1819046592).

Almost surely, 2^20147316879 is an apocalyptic number.

20147316879 is a deficient number, since it is larger than the sum of its proper divisors (8957428593).

20147316879 is a wasteful number, since it uses less digits than its factorization.

20147316879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9187166.

The product of its (nonzero) digits is 508032, while the sum is 48.

The spelling of 20147316879 in words is "twenty billion, one hundred forty-seven million, three hundred sixteen thousand, eight hundred seventy-nine".